Gi. Ioannidis et An. Kounadis, FLEXURAL-TORSIONAL POSTBUCKLING ANALYSIS OF CENTRALLY COMPRESSED BARSWITH OPEN THIN-WALLED CROSS-SECTION, Engineering structures, 21(1), 1999, pp. 55-61
In this paper the postbuckling behaviour of simply-supported bars with
uniform, open thin-walled cross-sections subjected to a centrally app
lied compressive load is examined. The analysis refers to sections for
which the centroid does not coincide with the shear center. Hence the
bars lose their stability through simultaneous bending and torsion. T
he proposed method is applied to the specific case of an equal leg ang
le for which numerical results for the critical (elastic) load are ava
ilable. (C) 1997 Elsevier Science Ltd.